count = 0  #初始化个数
for i in range(1, 5):
    for j in range(1, 5):
        for k in range(1, 5):
            if i != j and j != k and i != k:
                num = i * 100 + j * 10 + k
                print(num)  #输出所有满足条件的三位数
                count += 1

print("共有{}个互不相同且无重复数字的三位数".format(count)) #输出总数
